Resilient wheel.



c. A..WHALIE 11. H. BLACK.

RESILIENT WHEEL. APPLICATION-FILED JAN-22.1915.

1,157,272. Patented Oct. 19, 1915.

COLUMBIA FLANOGRAPH CID-,WASHINUTON, n. c.

rJNITEDsTAT s PATENT orsion.

' V CHARLES AQWHALE AND JAMES H. BLACK, OF PORTLAND, OREGON.

RESILIENT WHEEL.

To all whom it may concernrf Be it'known that we, CHARLES A. WHALE and JAims H. BLAon, citizens of the United States, residing in the city ofPortland, county of Multnomah', and State of Oregon, have invented"certain new and useful Improvements in Resilient Wheels, of which thefollowing is a specification.

Our invention relates to resllient Wheels,

and more particularly toa wheelrim of new and novel construction,adapted to compena satefor any unevenness in the surface over which thewheelmay be passing and to effectively absorb any vibration or shakingwhich would otherwise be *transmitted to the body of the vehicle.

Among the salient objects of our invention are,-to provide. incombination with a wheel rim a series of tread members movably mountedaround said rim, and supported. yieldably therein at a space therefrom,

whereby to permit of relative movement of said tread members toward andfrom said rim as weight is brought upon them during the turning of thewheel; to provide in such ya wheel rim a series of small'cylinders withpistons projecting therefrom and working therein and to which said treadmembers are attached; to provide in such a device a wheel rim andadapted to move radially toward'and from the same under pressure,

In order that others may thoroughly .un-

derstand our invention, we have shown in i the accompanying sheetofdrawings one simple embodiment of the same for. illustrative purposes,which we wlll now describe;

Figure 1 is a side elevation of a wheel rim embodying our invention,with a part of the side broken away to show the interior arrangement,and with a few of the small cylinders shown in section; and Fig. 2 isacross sectional view through the rim, as on line 22 of Fig. 1. I

i specification of Letters Patent. appl cat onfiled January 22, 1915.Serial No. we.

, Patented Oct..19, 1915.

Referringnow more in detail to the drawings, the wheel rim isof hollowring-like construction, made'ofimetal, and may be cast'in two sections,an inner section designated l, and an outer section designated 2, andprovided at their meeting edges with suitable flanges, as 3, by means ofwhich they are secured together, with any suitable packing therebetween.WVe'prefer to form said rim members with flattop and bottom,substantially as indicated, though itis evident that they could be maderound in cross section, if desired; We provide in said: rim, at oppositesides thereof, twoseries of small cylinders, as 4 4, with pistons,

5 -5, working therein, and pivotally con nected at their-outer ends, asat 66, to'the opposite ends of transversely disposed tread members7"7,whichare so constructed and arranged that they will move freely with thepistons and readily compensate for any unevenness in the surface overwhich the wheel is passing. One of said pistons 6, it will be noted, ispivotal-1y connected to the tread member 7 by means of a slot and pin 1connection, whereby'to compensate for any tilted movement of said treadmemberi'nwardly. y

' As an effective medium within the rim andin the small cylinders 4-4,we fill the rim partially full of oil and then with com- The cylindersare provided pressed air. near their lower ends with ports, i, throughwhich they communicate with the interior of the rim and through whichthe oil and compressed air pass into and out of the cylinders as thepistons are moved back and forth therein, thus effectively andyieldingly resisting the movement of said pistons, and

consequently the movement of the tread members relative to the wheelrim.

By providing in the wheel rim, crosswise thereof, partitions, as 8,indicated in dotted lines, the interior of the rim may be divided intofour, or more or less, separate chambers, independent of each other,thus making more effective the pressure resisting the movements of thepistons in the small cylinders.

We are aware that many changes can be made in the invention as hereillustrated for purposes of explanation without departing from thespiritthereof, and we do not, therefore, limit the invention to thisparticular I form, or to the detailed-description thereof, v except aswe maybe'limitedfby "the-hereto" appended claims,' forn'1ing' ap'ar'tthereof.

What We claim and 'desire to protect Letters Patent is, l

I 1. In a resilent wheel, a hollow wheel I provided with two series ofsmall cylinders; radially disposed therein and communicating vwith theinterior thereof,pist'oris'work' ing in said small cylindersandproj'e'cting; radially outwardly fim' said hollow rifn', a

series oftread.memberspivotally' attached "tothe outer endsofsaidpistons, eacih tread member being connected at its opposite endstoopposite pistons; and t, extending trans.-

versely of said rim, and'a resilient medium Inae l n v W ee a bell wWhel' rimprovided with two series. ofsmall cylinders radially disposedtherein and communicating with the interior thereof through restrictedopenings in the sides ojtsaid cyl-' :iiiders, said cylinders vbein'ganchored at their ,outerand innerends in the outer andinner wallsof sa d hollow wheel run, two series of pistons working; -in said smallcylinders f'and projecting radially outwardly from said hollow rim, aseries of tread members pivotally attached't'o. the outer ends of saidpistons,

ieachigtread membe'rlbeing connectedat its opposite'ends to oppositepistons andxex- V tending transversely of said rim,fand a resilientmedium consisting of a heavy liquid and air fillin'g saidhollow rims andsaid pis- Copies of this patent may b e obtained for tons, whereby themovements-ot' the pistons 4O:-

within the sinall} cylinders: are yl ldihg'ly; ire; tarded by" saidmedium, substantially as described.

" Whee :r :m;0frthecharacter de V l comprising a hollow rim providedwithpartition 'i fiembers dividing it into separate V45 chambers, twoseries. of small cylinders ar-" ran'gedsidegby side and radially"disposed I within each chamber, pistons working in 1 said cyliiidersfTra'd F members transversely disposed and pivotally connected attheir op-s po te' ns hl pp lri n lp i etin ders, saidl'cylindersicommunicating through r$P @d O en aith i s e iw tl l interior, of I he.rim h mbers Subs an l y a a e bed A e i ent wheel rim comprising a hollow rim, two series of, small cylinders, radially disposedfi'thereinside, by sidearoimd the interior of said rim, pistons working in saidcylinders and projecting, radially out:

'wardly Erom saidirim,fand aseries of tread 7 members transverselydisposed around said rim and each pivotallyconnected at'its joppo-- asite ends toopposite pistons, substantially as fdescribe da v Y. a

Signed at Portland, Qregon, thislfith day 7 otJanuary, l915.

. CHARLES A. WHALES Inpresencep. t p J, GVST ENG, f. J. G.YLSIMMONS.,.-

five cents "each, addressing the; Commissioner of Patents, 7 washingtonll cl I I a A E HfiBLA

